Stopper for disks.



Wl A. VAN BRUNT& J. SQHAEFFER.

STOPPER FOR DISKS.

APPLICATION FILED-APR. I, 1915-.

Patented May 30; 1916.

THB COLUMBIA PLANODRAPH C0.. WASHINGTON, lD. C.

WILLARD A. VAN BRUNT AND JOI-IN SCHAEFFER, OF HORICON, WISCONSIN,ASSIG-NORS T THE VAN BRUNT MANUFACTURING COMPANY, OF HORICON, WISCONSIN,A COR- PORATION OF WISCONSIN.

STOPPEB. FOR DISKS.

BRUNT and JOHN SCHAEFFER, citizens of the United States, residing atHoricon, in the county of Dodge and State of Wisconsin, have inventedcertain new and useful Improvements in Stoppers for Disks, of which thefollowing is a specification. 1

yThis invention relates to a stopper for furrow opening disks andparticularly to a stopper to be used in the disk bearings to protect thebearings against dust and foreign substances.

The main object of the invention is to arrange the parts so that thestopper will be effective in preventing the introduction of foreignsubstances into the bearing and at the same time present a device whichcan be easily and quickly removed.

In the drawings-Figure 1 is a vertical sectional view of a disk and itsbearing. showing the improved stopper applied thereto. Fig. 2 is a sideelevation of the disk stopper. Fig. 3 is an end view. Fig. 4 is asectional view on the line aof Fig. 2. Fig. 5 is a bottom plan view of amodification. Fig. 6 is a section on line 6-6 of Fig. 5.

Like parts are illustrated by similar characters of reference in theseveral views.

In Fig. 1 there is shown a specific form of bearing for a disk to whichis applied the invention described herein. In that particular form ofbearing illustrated in Fig. 1,

the disk is indicated by 1. A housing 2 is secured to the concave faceof the disk, a support for the disk is indicated by 3 and the drag baris indicated by 4. The bearing block 5 is secured within the housingk 2by the bolt 6 in the usual and well known manner employed in diskconstruction. This particular form of bearing is more fully described ina prior Patent 659,881, issued March 19, 1900.

Referring to Figs. 1, 2, 3, and 4 the stopper for the` bearing is formedwith a circular cap 7 of substantially non-flexible material and aseparate circular base 8 and between the base and cap there is clamped aspring member 9 by a rivet 11 and the free ends of said spring memberare specifically formed to cooperate with the disk itself to cause thestopper to be securely held on the disk to prevent foreign substancesentering the bearing and at the same time permit the stopper Speccatonof Letters Patent.

Patented May so, ioiye.

vApplication.filed April 7, 1915. Serial No. 19,650.

to be readily removed from Vthe disk. To

' the disk that the edge of the opening in the disk will lie between thecap of the stopper and the spring member 9 as shown clearly in Fig. 1.The arms of the spring member converge inwardly from the shoulders asindicated in Figs. 3 and 4- and in inserting the spring member withinthe bearings, the free ends of the spring vmember will be forcedinwardly, z'. e., toward the center of the disk until the shoulder orapex 10 of each of the two'arms of the spring member pass the inner wallof the disk when the arms of the spring member will spring outwardly andengage the inner corners of the inner wall of the disk as shown in 1,thereby securely holding the stopper in proper position on the disk andthe disk itself will extend between the flexible member 9 and capportion 7 of the stopper.

In order to remove the vstopper from the disk it is only necessary toinsert something, such as the blade of a pen-knife, between the topportion of the stopper and the outer surface of the disk and thereupon aslight pressure will force the stopper out of its position and enablethe stopper to be readily removed from the disk. The base 8 is formedwith recesses 8 coinciding with the arms of the spring member to permitthe inward yieldi ing of the same in inserting or removing the lug.

In Figs. 5 and 6 are shown a modification in which the cap 12 and baseportion 13 are cast in one integral piece, the base vportion Y f beingformed with a recess 16 to receive the springmember 15, which is rivetedto the cap 12 by the rivet 14. The construction and operation of thismodiied form is otherwise the same as shown in the preceding figures. n

Having thus described our invention, we claim: Y

1. The` combination with a disk formed with anopening, a stopper adaptedto be inserted within the opening in said disk, comprising alcap ofnon-flexible material, anda spring member adapted 'to project within theopening formed in the disk, said'spring member being spaced from the capportion of the disk a distance equal to substantially the thickness ofthe disk, whereby the disk will project Within said space and the springmember contact against the inner edge of the disk and the cap memberagainst the outer edge, substantially as specified.

2. The combination With a disk having a bearing and an opening in thedisk extending into the bearing, of a stopper comprising a cap and aspring member secured thereto having arms extending therefrom, each armhaving a shoulder formed thereon and converging parts extending fromsaid shoulders, the shoulder of each arm being adapted to spring intosaid opening beyond the inner Wall of the disk, whereby the springmember will clamp against the inner surface of the disk and the capmember clamped against the outer surface of the disk, substantially asspecified.

3. The combination With a disk having an opening, of a stopperconsisting of a cap portion and a base, said cap being of greaterdiameter than said opening and said base formed to fit said opening, andspring arms secured to said parts arranged to project through saidopening, a portion of said arms normally lying in a plane so as toengage the inner Wall of said disk adjacent the edge of the opening whenthe stopper is inse ted.

4. The combination with a disk having an opening, of a stopperconsisting of a cap porw tion and a base, said cap being of greaterdiameter than said opening and said base formed to fit said opening, andspring arms secured to said parts arranged to project through saidopening, a portion thereof normally lying in a plane beyond the edge ofthe opening When the stopper is inserted, and recesses in said baseportion to receive said spring member during the insertion of saidstopper.

In testimony whereof, We have hereunto set our hands this 22nd and 26thdays of March 1915.

VVILLARD A. VAN BRUNT. JOHN SCHAEFFER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Eatents.

Washington, D. C.

